Issued Patents All Time
Showing 551–575 of 584 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4982815 | Elevator apparatus | Noboru Arabori, Yoshio Sakai, Tsutomu Sano, Masao Nakazato, Masakatsu Tanaka +3 more | 1991-01-08 |
| 4984212 | Semiconductor memory | Minoru Fukuda, June Sugiura, Fumio Tsuchiya, Toshimasa Kihara | 1991-01-08 |
| 4966629 | Hot forming mold and method of manufacturing the same | Koichi Tsukiyama, Koichi Tsutsumi, Takashi Watanabe, Chiharu Wada, Keitaro Kunugiza +1 more | 1990-10-30 |
| 4948625 | Method for forming surface layer by electric discharge process | Masahiko Suzuki, Nagao Saito, Naotake Mohri, Tetsuo Shoji | 1990-08-14 |
| 4937052 | Underground chemical reactor | Tetsuo Shoji, Katsuto Nakatsuka, Hiroyuki Abe | 1990-06-26 |
| 4905195 | Semiconductor memory | Minoru Fukuda, June Sugiura, Fumio Tsuchiya, Toshimasa Kihara | 1990-02-27 |
| 4890476 | Precision plate bending machine having a play removing device | Takashi Wakahara, Yasuhiro Harashima | 1990-01-02 |
| 4869094 | Gas sampling valve | Kazuhiro Kozuka, Toshihiro Ozasa, Haruyoshi Kondo | 1989-09-26 |
| 4869347 | Speed control apparatus for elevators | Noboru Arabori | 1989-09-26 |
| 4852694 | Elevator starting compensation method and apparatus | Noboru Arabori, Yoshio Sakai, Kenji Yoneda | 1989-08-01 |
| 4844788 | Wide-range air/fuel ratio sensor and detector using the same | Haruyoshi Kondo, Keiichi Saji | 1989-07-04 |
| 4829416 | Apparatus for controlling power transducers of the pulse width modulation (PWM) control type | Hiromi Inaba, Seiya Shima, Sadao Hokari, Toshimitsu Tobita, Shigeta Ueda | 1989-05-09 |
| 4815418 | Two fluidized bed type boiler | Sadahiko Maeda, Yasumasa Idei, Masahiro Nishida | 1989-03-28 |
| 4803372 | Line position detecting apparatus for detecting a V-shaped indent | Tadashi Hirata, Katsumi Koyama, Yasuhiro Harashima, Michio Kitahara, Katsuyuki Igarashi +3 more | 1989-02-07 |
| 4788665 | Semiconductor memory | Minoru Fukuda, June Sugiura, Fumio Tsuchiya, Toshimasa Kihara | 1988-11-29 |
| 4773508 | Elevator control apparatus | Toshisuke Mine, Noboru Arabori, Katsu Komuro, Hiromi Inaba | 1988-09-27 |
| 4759214 | Method for determining fracture toughness of rock by core boring | Hideki Sekine, Hiroyuki Abe | 1988-07-26 |
| 4757436 | Current-type converter protecting apparatus | Shigeta Ueda, Mitsuyuki Hombu, Takeki Ando, Kazuhiko Sasaki, Kazuo Honda | 1988-07-12 |
| 4739830 | Method of collecting geothermal steam using AE/MA measurement | Hiroaki Niitsuma, Katsuto Nakatsuka, Morihiko Takanohashi, Ko Sato, Fumihiko Chiba | 1988-04-26 |
| 4691298 | Semiconductor memory | Minoru Fukuda, June Sugiura, Fumio Tsuchiya, Toshimasa Kihara | 1987-09-01 |
| 4672831 | Bending press | Tsuneo Kogure, Yuji Tsuchiyama, Tadashi Amano, Katsuji Sekita, Ichio Akami | 1987-06-16 |
| 4665984 | Method of measuring crustal stress by hydraulic fracture based on analysis of crack growth in rock | Kazuo Hayashi, Tetsuo Shoji, Hiroaki Niitsuma, Hiroyuki Abe | 1987-05-19 |
| 4661234 | Air-fuel ratio sensor and apparatus using the same | Haruyoshi Kondo, Takashi Takeuchi, Kiyoharu Hayakawa | 1987-04-28 |
| 4656862 | Press machine | Tsuneo Kogure, Yuji Tsuchiyama, Tadashi Amano, Katsuji Sekita, Ichio Akami | 1987-04-14 |
| 4640990 | Telephone answering apparatus having two integrators of different time constants | Hideji Kawade, Yoshiyuki Sato, Yuji Urayama | 1987-02-03 |